save project

my_music.py

@@ -22,9 +22,13 @@ while True:
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_UP:
                 volume+=0.1
+                if volume>1:
+                    volume=1
                 pygame.mixer.music.set_volume(volume)
             if event.key==locals.K_DOWN:
                 volume-=0.1
+                if volume<0:
+                    volume=0
                 pygame.mixer.music.set_volume(volume)
     if pygame.mixer.music.get_busy()==False:
         pygame.mixer.music.play()